Rand Paul’s class-action lawsuit against the National Security Agency’s surveillance policies is an early play in the Kentucky Republican senator’s presidential ambitions, a new report says.

While it will allow him to hone his brand as a champion of small government, it likely won’t have much legal effect, reports Politico.

Paul is up for re-election to the Senate in 2016, but is on a short list of Republicans being mentioned as a contender in the 2016 presidential race as well, and he is adding supporters for his NSA suit to his political database.

Names and emails of anyone who signs onto his campaign website, RandPaul2016.com, goes into the database, his campaign acknowledges.

Signing up to support the lawsuit through Paul’s website, on his non-governmental Facebook page, or at RandPAC.com does not make people who sign on a party to the lawsuit.

However, people signing on are asked to make a “generous donation to help rally up to ten million Americans to support my lawsuit to stop Big Brother from infringing on our Fourth Amendment freedoms.”